55321896 has 32 divisors (see below), whose sum is σ = 158063040. Its totient is φ = 15806208.

The previous prime is 55321873. The next prime is 55321897. The reversal of 55321896 is 69812355.

It is not an unprimeable number, because it can be changed into a prime (55321897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 164481 + ... + 164816.

It is an arithmetic number, because the mean of its divisors is an integer number (4939470).

Almost surely, 2^55321896 is an apocalyptic number.

55321896 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

55321896 is an abundant number, since it is smaller than the sum of its proper divisors (102741144).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55321896 is a wasteful number, since it uses less digits than its factorization.

55321896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329313 (or 329309 counting only the distinct ones).

The product of its digits is 64800, while the sum is 39.

The square root of 55321896 is about 7437.8690496674. The cubic root of 55321896 is about 381.0357156122.

The spelling of 55321896 in words is "fifty-five million, three hundred twenty-one thousand, eight hundred ninety-six".